"The grass is always greener on the other side of the fence" is a common saying that describes how situations and circumstances elsewhere can seem more appealing. The Los Angeles Rams understand that fully and use that optical illusion to their advantage to navigate difficult player conflicts or contract negotiations.
Players who are unhappy with the roles on the team are permitted to seek a better deal elsewhere. If no trade is an option, the team will outright release the player. If that player is quarterback Matthew Stafford, the player has the opportunity to see what other teams are offering, compare that to what the Rams are offering, and then make an informed decision.